To interconnect smoke detectors, you will typically use either a hardwired or wireless method. Hardwired interconnection involves running a three-wire cable (grounded) between detectors, while wireless systems use radio frequency to communicate. When one detector detects smoke, it sends a signal to all interconnected detectors, causing them to sound an alarm.
Hardwired Interconnection:
1. Wiring:
Install hardwired smoke detectors designed for interconnection. Run a three-wire cable (usually 14-3 or 12-3 grounded) from one detector to the next. The extra wire is for the interconnect signal.
2. Connecting:
Connect the black (hot), white (neutral), and red (interconnect) wires to the corresponding terminals on each detector.
3. Testing:
After installation, test the interconnected system by pressing the test button on one detector. All interconnected detectors should sound an alarm.
Wireless Interconnection:
1. Select a Model:
Choose a wireless interconnected smoke detector from a reputable brand like First Alert or Kidde.
2. Installation:
Install the detectors according to the manufacturer's instructions. Typically, you will install the detectors, pair them using a button or sequence on the device, and then test the system.
3. Testing:
Test the interconnected system by triggering one detector. All interconnected alarms should sound simultaneously.
Important Considerations:
Code Compliance:
Make sure the method you choose complies with local building codes.
Battery Backup:
Choose detectors with battery backup, especially if you choose a wireless system, to provide continued protection during a power outage.
Placement:
Follow the manufacturer's guidelines for proper placement of detectors in your home.
Testing:
Test interconnected smoke detectors regularly, at least monthly, to ensure they are functioning properly, according to the Electrical Guide.